used safety photoelectric barriers, these are two pairs of safety barriers used in Sick brand access points mod. MSLS06-22271 and MSLE06-22251A with n. 6 beams Ø2.3cm, distance between beams 22cm, operating at 24v, IP65 protection, wavelength 800NM, safety area height 112cm, response time less than 15ms. dimensions: 57X26cm h220cm, barrier h130cm a pair costs €1,000.00 but if you buy them all you spend €1,900.00 excluding VAT and transport